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Finding the Fourth Proportional to 1,165.84, 1,747.20 and 1,019.23

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Solution

The fourth proportional to 1,165.84, 1,747.20 and 1,019.23 is: 1,527.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.84 : 1,747.20 = 1,019.23 : x
  2. Step 2: Convert to fraction form
    1,165.84/1,747.20 = 1,019.23/x
  3. Step 3: Cross multiply
    1,165.84x = 1,747.20 × 1,019.23
  4. Step 4: Simplify right side
    1,165.84x = 1,780,798.66
  5. Step 5: Solve for x
    x = 1,780,798.66/1,165.84
  6. Step 6: Final answer
    x = 1,527.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.